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Cosmetic ingredient dictionary

Phenyl Methyl Pyrazolone in cosmetics: what it is and what it does

Phenyl Methyl Pyrazolone is a cosmetic ingredient that colours hair. The EU allows it only with limits or conditions. Open Beauty Facts finds it in 22 products, most often hair care.

By Bravoora teamUpdated Sources checked 3 sourcesHow we check

What does Phenyl Methyl Pyrazolone do in a product?

In a cosmetic product, Phenyl Methyl Pyrazolone colours hair. The EU’s CosIng database lists this job for it: hair dyeing.

hair dyeing

What other names and numbers does Phenyl Methyl Pyrazolone have?

CAS number
89-25-8
EC number
201-891-0
CosIng reference
36531

Is Phenyl Methyl Pyrazolone restricted in the EU?

Yes, it has limits. The EU allows it only with limits or conditions of use, such as a maximum amount or a warning on the label (Annex III of Regulation 1223/2009, entry 228).

The annex entry sets the exact limits, the products it may be used in and any warning the label must carry.

Which products contain Phenyl Methyl Pyrazolone?

Open Beauty Facts finds Phenyl Methyl Pyrazolone in the ingredient lists of 22 of the 22,021 products it has a list for, most often hair care and hair dyes.

  • Hair care4
  • Hair dyes4

Products with it, by country of sale: Australia 14 · France 3 · South Africa 1 · Spain 1.

Counted on 13 October 2026 from Open Beauty Facts, which volunteers fill from real packs: it shows where Phenyl Methyl Pyrazolone turns up, not how much of the market it is.

On these listsColorantsRestricted in the EU

Bravoora reads this ingredient for everyone you shop for: an allergy or intolerance, a vegan or vegetarian diet, a calorie or protein goal, and the labels on supplements and skincare too. Build a profile · For dermatologists, dietitians and doctors

Sources

The job, the description and the EU annex entry are CosIng’s; the fragrance allergens are the EU Annex III names Bravoora’s label checker reads; the product counts are Open Beauty Facts’.

  1. European Commission: CosIng cosmetic ingredient database (functions, description, EU annex entry)
  2. Open Beauty Facts: product database, 77,506 products, read 13 October 2026, ODbL
  3. EU Regulation 1223/2009 on cosmetic products (the annexes)

Contains information from Open Beauty Facts, which is made available here under the Open Database License (ODbL). Read the licence · Download this dictionary’s data · How we check

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